16 citations · 18 across the 4 of their papers we have counts for
4 papers
SharesSkew: An Algorithm to Handle Skew for Joins in MapReduce
Foto Afrati, Nikos Stasinopoulos, Jeffrey D. Ullman +1
In this paper, we investigate the problem of computing a multiway join in one round of MapReduce when the data may be skewed. We optimize on communication cost, i.e., the amount of…
Handling Skew in Multiway Joins in Parallel Processing
Foto N. Afrati, Jeffrey D. Ullman, Angelos Vasilakopoulos
Handling skew is one of the major challenges in query processing. In distributed computational environments such as MapReduce, uneven distribution of the data to the servers is not…
Consistent Answers of Conjunctive Queries on Graphs
Foto N. Afrati, Phokion G. Kolaitis, Angelos Vasilakopoulos
During the past decade, there has been an extensive investigation of the computational complexity of the consistent answers of Boolean conjunctive queries under primary key constra…
Efficient Lineage for SUM Aggregate Queries
Foto N. Afrati, Dimitris Fotakis, Angelos Vasilakopoulos
AI systems typically make decisions and find patterns in data based on the computation of aggregate and specifically sum functions, expressed as queries, on data's attributes. This…